144 lines
4.5 KiB
Diff
144 lines
4.5 KiB
Diff
|
From b01452b1d44a586f4ecf5cf02ffc0643e4962324 Mon Sep 17 00:00:00 2001
|
||
|
From: Renlin Li <renlin.li@arm.com>
|
||
|
Date: Sat, 3 Feb 2018 13:18:17 +0000
|
||
|
Subject: [PATCH] [PR22764][LD][AARCH64]Allow R_AARCH64_ABS16 and
|
||
|
R_AARCH64_ABS32 against absolution symbol or undefine symbol in shared
|
||
|
object.
|
||
|
|
||
|
backport from mainline
|
||
|
|
||
|
bfd/
|
||
|
|
||
|
2018-02-05 Renlin Li <renlin.li@arm.com>
|
||
|
|
||
|
PR ld/22764
|
||
|
* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Relax the
|
||
|
R_AARCH64_ABS32 and R_AARCH64_ABS16 for absolute symbol. Apply the
|
||
|
check for writeable section as well.
|
||
|
|
||
|
ld/
|
||
|
|
||
|
2018-02-05 Renlin Li <renlin.li@arm.com>
|
||
|
|
||
|
PR ld/22764
|
||
|
* testsuite/ld-aarch64/emit-relocs-258.s: Define symbol as an address.
|
||
|
* testsuite/ld-aarch64/emit-relocs-259.s: Likewise.
|
||
|
* testsuite/ld-aarch64/aarch64-elf.exp: Run new test.
|
||
|
* testsuite/ld-aarch64/pr22764.s: New.
|
||
|
* testsuite/ld-aarch64/pr22764.d: New.
|
||
|
---
|
||
|
bfd/ChangeLog | 7 +++++++
|
||
|
bfd/elfnn-aarch64.c | 15 ++++++++++++---
|
||
|
ld/ChangeLog | 8 ++++++++
|
||
|
ld/testsuite/ld-aarch64/aarch64-elf.exp | 1 +
|
||
|
ld/testsuite/ld-aarch64/emit-relocs-258.s | 3 ++-
|
||
|
ld/testsuite/ld-aarch64/emit-relocs-259.s | 3 ++-
|
||
|
ld/testsuite/ld-aarch64/pr22764.d | 18 ++++++++++++++++++
|
||
|
ld/testsuite/ld-aarch64/pr22764.s | 6 ++++++
|
||
|
8 files changed, 56 insertions(+), 5 deletions(-)
|
||
|
create mode 100644 ld/testsuite/ld-aarch64/pr22764.d
|
||
|
create mode 100644 ld/testsuite/ld-aarch64/pr22764.s
|
||
|
|
||
|
diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c
|
||
|
index d5711e0..9731882 100644
|
||
|
--- a/bfd/elfnn-aarch64.c
|
||
|
+++ b/bfd/elfnn-aarch64.c
|
||
|
@@ -7074,10 +7074,19 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
||
|
#if ARCH_SIZE == 64
|
||
|
case BFD_RELOC_AARCH64_32:
|
||
|
#endif
|
||
|
- if (bfd_link_pic (info)
|
||
|
- && (sec->flags & SEC_ALLOC) != 0
|
||
|
- && (sec->flags & SEC_READONLY) != 0)
|
||
|
+ if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
|
||
|
{
|
||
|
+ if (h != NULL
|
||
|
+ /* This is an absolute symbol. It represents a value instead
|
||
|
+ of an address. */
|
||
|
+ && ((h->root.type == bfd_link_hash_defined
|
||
|
+ && bfd_is_abs_section (h->root.u.def.section))
|
||
|
+ /* This is an undefined symbol. */
|
||
|
+ || h->root.type == bfd_link_hash_undefined))
|
||
|
+ break;
|
||
|
+
|
||
|
+ /* For local symbols, defined global symbols in a non-ABS section,
|
||
|
+ it is assumed that the value is an address. */
|
||
|
int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
|
||
|
_bfd_error_handler
|
||
|
/* xgettext:c-format */
|
||
|
diff --git a/ld/testsuite/ld-aarch64/aarch64-elf.exp b/ld/testsuite/ld-aarch64/aarch64-elf.exp
|
||
|
index f310893..d766f37 100644
|
||
|
--- a/ld/testsuite/ld-aarch64/aarch64-elf.exp
|
||
|
+++ b/ld/testsuite/ld-aarch64/aarch64-elf.exp
|
||
|
@@ -275,6 +275,7 @@ run_dump_test "pr17415"
|
||
|
run_dump_test_lp64 "tprel_g2_overflow"
|
||
|
run_dump_test "tprel_add_lo12_overflow"
|
||
|
run_dump_test "protected-data"
|
||
|
+run_dump_test_lp64 "pr22764"
|
||
|
|
||
|
# ifunc tests
|
||
|
run_dump_test "ifunc-1"
|
||
|
diff --git a/ld/testsuite/ld-aarch64/emit-relocs-258.s b/ld/testsuite/ld-aarch64/emit-relocs-258.s
|
||
|
index f724776..87bb657 100644
|
||
|
--- a/ld/testsuite/ld-aarch64/emit-relocs-258.s
|
||
|
+++ b/ld/testsuite/ld-aarch64/emit-relocs-258.s
|
||
|
@@ -1,5 +1,6 @@
|
||
|
+.global dummy
|
||
|
.text
|
||
|
-
|
||
|
+dummy:
|
||
|
ldr x0, .L1
|
||
|
|
||
|
.L1:
|
||
|
diff --git a/ld/testsuite/ld-aarch64/emit-relocs-259.s b/ld/testsuite/ld-aarch64/emit-relocs-259.s
|
||
|
index 7e1ba3c..0977c9d 100644
|
||
|
--- a/ld/testsuite/ld-aarch64/emit-relocs-259.s
|
||
|
+++ b/ld/testsuite/ld-aarch64/emit-relocs-259.s
|
||
|
@@ -1,5 +1,6 @@
|
||
|
+.global dummy
|
||
|
.text
|
||
|
-
|
||
|
+dummy:
|
||
|
ldr x0, .L1
|
||
|
|
||
|
.L1:
|
||
|
diff --git a/ld/testsuite/ld-aarch64/pr22764.d b/ld/testsuite/ld-aarch64/pr22764.d
|
||
|
new file mode 100644
|
||
|
index 0000000..997519f
|
||
|
--- /dev/null
|
||
|
+++ b/ld/testsuite/ld-aarch64/pr22764.d
|
||
|
@@ -0,0 +1,18 @@
|
||
|
+#source: pr22764.s
|
||
|
+#ld: -shared -T relocs.ld -defsym sym_abs1=0x1 -defsym sym_abs2=0x2 -defsym sym_abs3=0x3 -e0 --emit-relocs
|
||
|
+#notarget: aarch64_be-*-*
|
||
|
+#objdump: -dr
|
||
|
+#...
|
||
|
+
|
||
|
+Disassembly of section \.text:
|
||
|
+
|
||
|
+0000000000010000 \<\.text\>:
|
||
|
+ 10000: d503201f nop
|
||
|
+ ...
|
||
|
+ 10004: R_AARCH64_ABS64 sym_abs1
|
||
|
+ 1000c: 00000002 \.word 0x00000002
|
||
|
+ 1000c: R_AARCH64_ABS32 sym_abs2
|
||
|
+ 10010: 0003 \.short 0x0003
|
||
|
+ 10010: R_AARCH64_ABS16 sym_abs3
|
||
|
+ 10012: 0000 \.short 0x0000
|
||
|
+ 10014: d503201f nop
|
||
|
diff --git a/ld/testsuite/ld-aarch64/pr22764.s b/ld/testsuite/ld-aarch64/pr22764.s
|
||
|
new file mode 100644
|
||
|
index 0000000..25e36b4
|
||
|
--- /dev/null
|
||
|
+++ b/ld/testsuite/ld-aarch64/pr22764.s
|
||
|
@@ -0,0 +1,6 @@
|
||
|
+ .text
|
||
|
+ nop
|
||
|
+ .xword sym_abs1
|
||
|
+ .word sym_abs2
|
||
|
+ .short sym_abs3
|
||
|
+ nop
|
||
|
--
|
||
|
2.9.3
|
||
|
|